E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/32 (2006.01)
Patent
CA 2560851
A method for reducing or eliminating water block around a well bore of a well bore region in a reservoir is provided. The method comprises removing the water from around the well bore, injecting crude oil around the well bore, and injecting precipitants causing surface precipitation of asphaltenes thereby altering formation wettability in the well bore and decreasing capillary forces of retention for water and/or gas condensates and increasing the flow of hydrocarbon fluids from the reservoir.
La présente invention concerne un procédé permettant de réduire ou de supprimer le bouchon d'eau entourant un puits dans un réservoir. Le procédé consiste à éliminer l'eau d'autour du puits, à injecter du pétrole brut autour du puits, et à injecter des précipitants provoquant la précipitation superficielle des asphaltènes, ce qui modifie la mouillabilité de la formation dans le puits, et affaiblit les forces capillaires de rétention des condensats d'eau et/ou de gaz et augmente l'écoulement des fluides d'hydrocarbures à partir du réservoir.
Morrow Norman R.
Tong Zhengxin
Borden Ladner Gervais Llp
University Of Wyoming
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